O’Callaghan Heating and Air offers air conditioning service and air conditioning repair on all Amana air conditioning systems in the Atlanta metro area. For over forty years, the owners of O’Callaghan Heating and Air has been Atlanta’s most reliable and dependable air conditioning service and repair. Our highly skilled staff and factory trained technicians are among the best in Atlanta. Call us today for a free estimate on heating and air conditioning service and repair or a quote on replacing your outdated air conditioning system.